How well does im phenergan work for the prophylactic prevention of nausea and vomiting due to a stomach virus?

Pretty: well but sounds like a lot simpler medication would work by MOUTH ..why the injection ..I have not heard of this aggressive treatment as PROPHLAXIS for a possible stomach virus! Hope this is helpful Dr Z

It will: Work well but usually not necessary except if excessive vomiting is present. Rehydration, Rest and analgesic is the main care. Usually self limited illness.